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P‐172: Determination of Hole Mobilities in New Blue Emitting Organic Diodes by Means of Impedance Spectroscopy
Author(s) -
Arredondo Belén,
Romero Beatriz,
Álvarez Ángel Luis,
GutiérrezLlorente Araceli,
Quintana Xabier,
Mallavia Ricardo,
Vergaz Ricardo,
Montilla Francisco,
SánchezPena José Manuel,
Otón José Manuel
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785439
Subject(s) - electroluminescence , electrical impedance , diode , materials science , dielectric spectroscopy , admittance , optoelectronics , capacitive sensing , biasing , mobilities , analytical chemistry (journal) , electrode , chemistry , electrical engineering , voltage , nanotechnology , social science , layer (electronics) , electrochemistry , chromatography , sociology , engineering
In this work we have fabricated passive diode matrices based on a new blue emitting organic electroluminescent polymer. In order to determine the capacitive response at typical display operating frequencies, impedance vs frequency measurements have been carried out at different bias. In addition, hole mobilities have been extracted by fitting a new theoretical model to the measured admittance, that takes into account the effect of an injection barrier, obtaining values from 10 −12 m 2 /Vs to 10 −10 m 2 /Vs with increasing bias.